public class PC {
    CPU cpu;
    HardDisk HD;
        void setCPU(CPU cpu) {
            this.cpu = cpu;
        }
        void setHardDisk(HardDisk HD) {
            this.HD = HD;
        }
        void show(){
        System.out.println("CPU速度:"+cpu.getSpeed());
        System.out.println("硬盘容量:"+HD.getAmount());
        }
}